Production process for preparing activated carbon from sludge

A technology for preparing activated carbon and production process, which is applied in the direction of carbon compounds, inorganic chemistry, chemical instruments and methods, etc. It can solve the problems of water and soil pollution, land occupation, large investment, etc., and achieve uniform activation, lower energy consumption costs, and system energy consumption low effect

Inactive Publication Date: 2020-01-07
SHANXI XINHUA CHEM
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these sludges are disposed of by landfill, causing new problems of water and soil pollution and land occupation. The newly developed sludge drying technology and sludge incineration technology are difficult to obtain in large areas due to problems such as large investment and small output. to promote

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production process for preparing activated carbon from sludge
  • Production process for preparing activated carbon from sludge
  • Production process for preparing activated carbon from sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Specific embodiments of the present invention will be described in detail below.

[0024] 1. The production process of preparing activated carbon from sludge, including the following steps:

[0025] (1) Preparation process of raw materials

[0026] The first is the quantitative feeding of urban sludge, carburant, and surface strength additives for the production of raw materials, then the mixing and drying and dehydration of these three materials, and finally the granulation of the materials after drying and dehydration to complete the raw material preparation process.

[0027] Quantitative feeding of municipal sludge, carburizer, and surface strength additives. Sludge quantitative feeding adopts pumping and screw airtight conveying methods to ensure the accuracy of feeding and prevent sludge odor from escaping. The quantitative feeding of carburizer and surface strength additive adopts the production car loading and quantitative belt transportation to realize the qua...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a production process for preparing activated carbon from sludge. The production process comprises the following steps: 1, preparation of raw materials: mixing municipal sludge,a carburant and a surface strength additive, drying and dehydrating the mixed materials, then carrying out granulating, and sending a granulated material into a pyrolysis carbonization device for processing; 2, pyrolysis carbonization: adopting an internally-heating rotary kiln or an internally-heating tunnel kiln type pyrolysis carbonization furnace, and carrying out pyrolysis carbonization at atemperature of 500-700 DEG C for 30-45 min; and 3, activation: adopting a physical activation mode, and carrying out activation at 750-900 DEG C for 2-3 h with carbon dioxide and water vapor as activation media. According to the invention, biological sludge is used as a main raw material to prepare the biological sludge-based activated carbon, so the three purposes of reduction, harmless treatment and recycling of the sludge can be realized; and the biological sludge-based activated carbon can be used as a novel environment-friendly material for environmental protection treatment, so the problem of sludge treatment in China at present is effectively solved.

Description

technical field [0001] The invention relates to the field of activated carbon preparation, in particular to a production process for preparing activated carbon from sludge, and can solve the problem of municipal sludge disposal. Background technique [0002] Municipal sludge treatment has become a common problem in all countries in the world. my country's policy requires cities above the county level to build sewage treatment plants, and municipal biological sludge treatment has become a major problem for the government. Usually, about 0.5kg of sludge is produced per ton of sewage. At present, the total scale of urban sewage treatment in the country will reach 1×10 8 m 3 / d, the amount of sludge reaches 5×10 4 t / d. Most of these sludges are disposed of by landfill, causing new problems of water and soil pollution and land occupation. The newly developed sludge drying technology and sludge incineration technology are difficult to obtain in large areas due to problems such ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/336
CPCC01B32/324C01B32/336
Inventor 李洪祥张重杰邓峰乔娟
Owner SHANXI XINHUA CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap